The Rule of 72 is an easy way to estimate how long
it will take your investment to double in value.
Just divide 72 by the rate or return to see how 
many years it will take to double.
                   
  Rate of return         Years to Double 
 
     
                   
 
     
                   
 
     
                   
Assumptions
The rate of return is compounded annually. The maximum return you can enter is 20%.
Disclaimer
This calculator is for illustrative purposes only. Depending on changes in the rate of return 
over time, what you’re invested in, how you invest it, how interest is applied, and possible 
tax implications, the actual amount of time needed to double your money will vary. You
should not rely on the results as indication of your financial needs and we recommend 
that you seek out your own investment, legal, tax or professional advice.
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